Co-existence of multiple trade-off currencies shapes evolutionary outcomes

Research output: Contribution to journalArticle

Abstract

Evolutionary studies often assume that energy is the primary resource (i.e. “currency”) at the heart of the survival-reproduction trade-off, despite recent evidence to the contrary. The evolutionary consequences of having a single trade-off currency versus multiple competing currencies are unknown. Using simulations, we modeled the evolution of either a single physiological currency between reproduction and survival, or of multiple such currencies. For a wide array of model specifications varying functional forms and strengths of the tradeoffs, we show that the presence of multiple currencies (e.g. nutrients, time) generally results in the evolution of higher lifetime reproductive success through partial circumvention of such trade-offs. Evolution of the underlying physiology is also more highly contingent with multiple currencies. These results challenge the paradigm of a single survival-reproduction trade-off as central to life history evolution, suggesting greater roles for physiological constraints and contingency, and implying potential selection for evolution of multiple trade-off currencies.

Details

Authors
Organisations
External organisations
  • University of Sheffield
  • University of Queensland
  • Université de Sherbrooke
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Evolutionary Biology
Original languageEnglish
Article numbere0189124
JournalPLoS ONE
Volume12
Issue number12
StatePublished - 2017 Dec 1
Publication categoryResearch
Peer-reviewedYes